Really lightweight and handy only gripes I have are:
1. Almost impossible to fold it back into the pouch.
2. Doesn't have a Long sling
But overall very happy with my buy.
This is a fabulous backpack, can't wait to have an occasion to actually pack it with me. I only have one concern, which is that I've been carrying my bike lock in it when I'm on my bike, and I think some of the threads are starting to pull apart, meaning this backpack is not meant to carry anything heavy.
The inside of the backpack is sturdy and the ventilated back is great, but I wish the laptop compartment was a bit wider and that there were more pockets for storage.